public void RemoveRange(IEnumerable <Major> majors)
{
if (majors.Count() == 0)
{
throw new ArgumentNullException("majors");
}
var hasStudents = majors.Count(g => g.Students.Count > 0);
if (hasStudents > 0)
{
throw new ForeignKeyEntityException("This major could not be removed. It has one or more students associated with it.");
}
_majorRepository.RemoveRange(majors);
}
